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Buried box-type substation

Buried substation is a distribution transformer or combination transformer that can be installed in the pit. Applicable to: densely populated central urban areas, highways, bridges, streets, tunnels, airports, ports, tourist attractions, villas, garden communities, etc. After installation, it does not occupy the surface area of the land, does not affect the urban landform, and ensures reliable power supply on the basis of saving land occupation.
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Product Parameters

Performance characteristics

1. Fully considering the particularity of heat dissipation conditions, the transformer adopts low loss and low temperature design, and the top oil temperature is controlled at about 45K, which is far lower than the national standard of 60K;

2. High and low voltage inlet and outlet lines adopt waterproof, fully sealed, fully insulated and fully shielded wiring mode;

3. The box shell is made of anti-corrosion stainless steel, fully sealed, and can be immersed in water for a period of time;

4. The protection system fully considers the convenience of operation and safety;

Suitable for urban environment (installed in the basement or cellar), especially suitable for densely populated central cities.

 

 

Technical parameters

 

Serial Number

Project

Unit

Technical parameters

1

Rated voltage

High pressure side

kV

12

Low pressure side

kV

0.4

2

Rated capacity

kVA

30~1600

3

Wiring mode

 

D,yn11（Y,yn0）

4

Rated frequency

Hz

50

5

Pressure regulating range

 

±2x2.5%、±5%

6

Noise level

dB

≤ 40

7

1min power frequency withstand voltage

High pressure side

kV

35

Low pressure side

kV

5

8

Lightning impulse withstand voltage (peak)

full wave

kV

75

chopping wave

kV

85

9

Enclosure protection class

Meet the requirements of national standards

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